Apparatus for use in erecting concrete structures



May 18,1926.

P. 1. CREEDON 1,585,083

APPARATUS FOR USE IN ERECTING CONCRETE STRUCTURES Filed June 16v 1925 3Sheets-*Sheet 1 17 Mum May 18 1926. 1,585,083

P. J. CREEDON I APPARATUS FOR'USE IN ERECTING CONCRETE STRUCTURES FiledJune 16. 1925 :3 Sheets$heet 2 EJC'reecian May 18 l926. 1,585,083

Y I P. J. CREEDON APPARATUS FOR USE IN ERECTING CONCRETE STRUCTURESFiled June 16. 1925 3 Sheets-Sheet 5 Patented May l d, 1926.

PATRICK J. CBEEDON, OF OMAHA, NEBRASKA.

APPARATUS FOR USE ERECTING CONCRETE STRUCTURES-- Application filed June16, 1925.

My invention seeks to provide mold forms corners in a wall or otherstructure may be' easily formed and the mold members readily removedfrom the corners without disrupting the surface of the concrete body.These several stated objects, and other objects which will incidentallyappear, are attained in the use of such an apparatus as is illustratedin the accompanying drawings, and the invention resides in certain novelfeatures which will be particularly pointed out in the appended claims.i

In the drawings:

Figure 1 is a sectional elevation of mold forms embodying my inventionarranged for use in forming a wall;

' Fig. 2 is an enlarged detail horizontal section on the line 2-2 ofFig. 1;

3 is an enlarged horizontal section on the line 3-3 of Fig. 1;

Fig. 4 is a plan view showing my improved apparatus arranged to form twomeeting walls and illustratingthe method of forming corners;

Fig. 5 is a horizontal section of a wall constructed by the use of myapparatus;

6 is a vertical sectional view on the line 6-601" Fig. 5;

Fig. 7 is an enlarged detail section on the line 7-7 of Fig. 1;

8 is an enlarged sectional elevation on the line 88 of Fig. d;

Fig. 9 is an enlarged horizontal section of a part of the means forforming an inside corner;

1.0 is an enlarged vertical section illustrating the manner of forming acornice and also the manner of forming a corner between a side wall andaceiling; Fig. 11 is a view showing the mold memhers arranged to form abeam or girder;

Fig. 12is a view, party in horizontal sec-- ion anclpartly in P an? qinean $112, 991mm, and

Serial No. 37,510.

Fig. 18 is a detail view showing means employed in forming a roundcorner or proection.

In the practice oi the invention, posts 1 are set up at intervals alongthe line of a contemplated wall, and upon these posts are mounted jackswhich are adapted to support the mold members or forms and effectlifting of the same as the formed wall increases in height. Each jackconsists of an arm 2 provided at one end with a yoke or stirrup member 3adapted to span the post 1 and held firmly to the post at the properieight by a set clamping bolt 4 mounted in one side of the yoke andarranged to bear against the post, as shown clearly in Fig. 2.

The yoke its closely to the post and a roller 5 is mounted between theends or the side members of the yoke to ride upon the post when the jackis being raised or lowered. This roller is shown clearly in Fig. 2, andit will be noted that it is of ahollow form and held in place by a bolt6 inserted through the sides of the yoke, the roller being thus held tothe post so that it aids in maintaining the jack arm in proper positionupon the post and aso reduces the frictional wear upon the post when thejack is being moved vertically. The arm 2 is preferably of channelformation, and in its upper web are formed longitudinal slots 7receiving the upper ends of hanger bolts or threaded rods 8 which areheld in the arm by clamping nuts 9 mounted upon the respective hangerbolts above and below the cross web of the arm and turned home againstthe same, as will be understood upon reference to F ig. 1. Carried bythe lower ends of these hanger members and supported by the heads of thesame are mold board carriers which are preferably of the T- hape crosssection illustrated in Fi 7. The upper ends of these mold carriers areprovided with outstanding lugs or flanges 11 which are fitted upon thelower ends of the hangers whereby the carriers are suspended from thejack arm 2, as clearly shown in Fig. 1. The mold members, which arepreferably boards, are mounted upon the inner sides of the carriers,and, in order that the mold members may be firmly supported, thecarriers are provided at their lower ends with inwardly projecting feet-12 adapted to engage under f the lower edges of the moldmembersllfiiflso to support the same, Preferably, the

inner ends of the teet 12 are provided with upstandi toes l-l seating;in corresponding notches or grooves in the mold members so that thelatter will be held against inward lateral movement a ray tron; thecarriers. The upper edges he mold members are held to the carriers bybrackets 15 slidably titted upon the side flanges ot the carriers andprovided at their lower ends with overhanging lips 16 adapted to eng':5e over the upper edges ot' the mole! members. as shown v wlrgreby thelatter will be The brackets are clearly in Fin. r. held c'ose to the cariers. provided with re '2 traat side flanges 17 en- ;iia glng the sides0'; the respective c: rriers, as shown clearly in F1 7. and a set ho tto is mounted in the upstanding; portion of "he bracket to he turnedhome against the car rier and thereby secure the bracket in place. Itwill he understood that after the mold members are placed aga nst thecarriers the brackets are slid downwardly to engage the upper edges ofthe mold members and the set bolts then turned home so that he bracketsw'll be rigidly secured.

The inner opposed faces of the mold members are gencral'y flat andsmooth in order that they will properly shape the surfaces of the wallwhich is shown at 19 in Fig. 5. It is frequently desirable to have thebase projection on an interior wall formed integral with the wall. andto tnis end the lower port ons 01 the mold m mber 13, which are at theinner side of the apparatus when set up for use. may be provided with arecess 20 shown in FiL'. 1 so that, when the concrete is poured into themold and tamped a portion of the same will spread laterally into thesaid recess and thereby proz'luce the desired has It will he understoodthat the longitudinal slots 7 in the jack arm 2 provide for adjustmentof the ca *riers 10 toward a 1d from each other so that they may be setto produce walls ot any desired thickness. In order that the moldcarriers may be main tained a the set distance apart, I provideturn-buckles 21 and 22 which extend between the upper portions of thecarriers and each of which has its ends pivotally :on-

iccted to the carriers. as indicated at 93. These turnlnickl smayobviously be easily ljusted so that the CIUllGIS will be at the anceapart. and it the upper turnbe shortened while the lower turnhuck'e leftundisturbed. the upper ends at tie carriers will be caused to swing toward each other sutlicien ly to loosen the mold nembers 'trom the setconer'te so that the mold in y be raised without marring the surface ofthe wall. Of course. by properly adjustii {I both turnlnickles, thecarrier arms may be moved town. d or from each other so that the moldmembers may be moved lateral]; rom the wall. before bein raised. and

this adaptability of the device will permit it to be employed wacnprojections or ornamental des gns are to be formed in the surfaces ofthe walls. It will, of course, be und rstood that the lugs 11 at theupper ends of the carrier arms are slotted or have the openingstherethrough large enough to accnnmodatc the relative movement of thecarriers upon the hangers so that. while the carriers will be liriuysupported in use, thcy will not bend the hangers when adjustmentof thecarriers necessary.

llelow the yoke 3 a similar yoke Zl is litted to the post l, and thisyoke is equipped at its rear end with a roller 25 and bolts 26corresponding in all respect to the roller 5 and. bolt (3. A set bolt 27is also mounted in the side of the yoke 2% and corresponds in allrespects to the bolt 4 so that the yoke 2% may he firmly secured to thepost or upright The outer side of the yoke 24 is formed into or carriesa box 28 and upon one side of the yoke secured bearings 29 in which isjournaled a shaft 30 equipped at its inner end with a crank handle 31and carrying near its outer end a worm 32 meshing with a worm gear 33which is housed within the box 28. The worm gear 33 has an internallytln'eaded hub which is engaged with a threaded rod ill depending fromthe j; arm 2, the upper end of the said rod being firmly secured in thejack arm in any eliicient manner, as by the use of a set bolt 33 mountedin the side of the arm and turned home against the upper end of the.rod. .lt will he understood that, if the set clamping bolt -lbc loosenedwhile the bolt 21'' is secured. rotation of the shaft 30 will ellectrotation of the worm gear 33 which will thereupon tend to ride along therod ill. but inasmuch as the gear is housed within the box 28 and isheld against movement from the box by the top and bottom walls at thesame. the rod "3.4 will be caused to more a ially through the gen andthe jack arm with the mold carriers and the. molds suspended theretromwill be moved vertically and caused to ride upwardly upon the supportingpost 1. \Vhen the jack arm las been raised to the limit of the rodllwhich usually equal in length to the height of to course of the wall.the set bolt 4 is turned ;.v.ne so as to clamp the. post 1 and the setbolt 27 is loosened. whereupon. it the rotalion oi" the shatt 30 becontinued. the gear 3$ and. the box and yoke carrying the sanzc will becaused to t'avel upwardly so as o adapt the device tor anotheroperation. of rouisa. alter the yoke it has been moved upwardly close tothe yoke the set bol again turned home.

L11 order to produce the dead-air space in the finished wall. T providea plurality of cores, such are shown at 35. These cores be of anysuitable material and are clearly in Fig. 5.

preferably constructed of wood having conveX ends, as shown at 37, andhaving vertical grooves 38 extending the full height of their endsurfaces. Intermediate plates 39 are provided between adjacent cores,and these plates are relatively narrow and thin and have their edgesadapted to seat in the grooves 38, as will be readily understood uponreference to Fig. l. in the lower ends of the intermediate plates 39 areformed notcl'ies a0 whereby the said plates may fit over transversereinforcments and tie rods all which are disposed upon the concrete atintervals as it is poured, it being understood that it is desired in thefinished wall to have air spaces 41-2 connected by narrow spacesthrougl'iout the extent of the wall, the inner and outer members of thewall being entirelv independent of each other, except for the tie barsll which are disposed at intervals across the narrow spaces 4L3, asshown The intermediate plates or strips 39 will frictionally engagewithin the grooves 38 so that, when adjacent cores are raised, theintermediate plate will also he raised, but the plates may be raisedinde icndently of the cores and to that end a hook. or eye, indicated at44:, may be provided atthe upper end of each of the intermediate plates.As the pouring of the concrete proceeds, a tie bar 41 is placed inposition and the strip 39 is pushed downwardly until the notch 40 fitsover the said tie bar. The pouring then. proceeds in the usual manneruntil it reaches the level at which another tie bar is desired,whereupon the strip is raised to permit the placing of such tie bar andthe process then proceeds as before. T he cores are supported from theupper edges of the mold members 13 and for this nose I provide atintervals the yoke or bars 45, the ends of which rest upon ertendlaterally beyond the upper edges Brackets or angle and of the moldmembers. bars are provided along the upper edges of the mold members atthe upper sides thereof and the ends of the bars 45 are secured to thesebrackets, as shown clearly in Figv 8. Secured in the upper end of thecores in am convenient manner are hanger bolts 4'? which projectupwardly through the cores and have their upper ends ex tended throughthe centers of the bars 45 and secured therein by nuts 48, as will beunderstood upon reference to Fig. 8. The central portions of the bridgeor yoke bars are stepped upwardlv defining an arch 49 in'miediatelyabovethe core to accommodate relative upward movement of the core. lt issometimes desirable to loosen the core from the concrete beforeattempting to raise the molds, and for this purpose the nut 41-8 may beturned home so that the top of the core will be drawn into the arch i9of bridge bar, thereby releasing the core from the concrete so that itmay then be raised to the desired height without disrupting the concretewhich will generally need further setting at this time. It will beunderstood, of course, that, as shown in Fig. a b idge or yoke bar 45will be provided to support each end of each core and at the corner of awall, or the meeting point of two walls, a longer bar will be providedso that it may extend across the angle or corner and be connected withthe adjacent ends of the meeting cores. It will also be convenient toprovide two jack arms 2 upon the post 1 at the corner of a wall, theupper jack arm resting at its yoke or inner end upon the lower jack armso that, when the jack shaft 30 is rotated, both arms will be raised. Itwill be understood that the con crete'is poured until it reaches thelevel of the upper edges of the mold members, whereupon the jacks aremanipulated to raise the mold members tosuch height as will permit theJouring of another course of concrete. inasmuch as the core-carryingbars 4:5 rest at their ends upon the upper edges of the mold members andare secured to brackets or bars which, in turn, are secured to said moldmembers, the cores will be raised with the outer mold members so thatthe entire apparatus will be set for a second pouring.

It may be noted at this point that the members 46 serve asreinforcements to brace the upper edges of the outer form boards or moldmembers 13 and enable them to withstand the strain imposed thereon bythe pouring and the tamping of the concrete. lt wi l, ofcourse, beunderstood that metallic reinforcements are set in place so as to extendvertically and horizontally through the concrete wall as the pouringprogresses.

External square corners may be formed and the mold members withdrawnfrom such corners without disrupting the surface of the concrete but itis sometimes desirable to raise the form board or mold member at oneside of a corner before raising the form board at the other side of thecorner inasmuch as the pouring and setting may proceed in such mannerthat one side of the corner will be finished before the other side isfinished. I, therefore, provide a connection between the forms at thecorner which will permit such relative movement. Referring particularlyto Figs. 4c and 9, it will be noted that a plate or bracket 50 issecured upon the outer face of one form board or mold member 13 andprojects beyond the end. edge of said member, the projecting portionbeing formed into a hook or grooved extension 51. A. plate 52 is securedto the outer face of the meeting mold member 13, and this plate isprovided along its outer vertical edge with a head 53 which fits closelywithin the grooved or hook-member 51 so that,

whi e manu parati n of these parts will loo be prevented and they willbe held together under the normal strains, they may be shiftedvertically relative to each other without becoming separated. At theinner corner I provide the same construction, except that the side edgesof the respective plates are bent or turned angularly, as shown mostclearly at 5st in Fig. 9, thereby accommodating the inner angle of themeeting plates so that the interengag'ed portions of the connectingplates will extend diagonally across the corner. This is advantageousbecause it permits the employment of a form block having dovetailededges which will tit to the adjacent edges of the inner mold members 3and permit the utilization of the connecting plates to support thisblock in place and prevent its falling away from the concrete as thelatter is poured and formed. In order that this form block may be easilyshit'tcd without disrupting the corner, I form the working face of thesame upon a convex arc and, consequently, the corner produced will beconcave. I have found that ii a round inside corner be produced the termmay be easily removed therefrom without marring the surface of thecorner but it is ditlicult to remove the forms from a square insidecorner without marring the surface. For this reason, I generally form around corner, as shown at 56 in Fig. 10, between a side wall and aceiling. In providing for the corner between a side wall and a ceiling,it is, of course, not necessary to provide for relative verticalmovement between the mold members forming the corner inasmuch as theceiling forms, indicated at 57, are not to be shifted vertically. Theymay convenicntly be held in position by fixed uprights, indicated at 58.The corner mold 59 is, therefore, merely held in place by angle brackets60 which are secured to the adjacentmold member 57 and bear against themold black 59.

In forming round projections exterior to a wall, such as a bay window. Imay employ the forms, such as indicated in Fig. 13, consisting of aflexible sheet metal plate 61 of proper dimensions provided at intervalsupon one face with brackets 62. *lexible rods or straps (33 are insertedthrough the brackets 62 and set screws 6 1- are mounted in the bracketsto bear against the strips or rods. The metal plate is easily bent tothe desired curvature and the strips 63 are, of course, given the samecurvature after which the set screws are turned home against the stripsor reds and will hold the form in the shape given it. The term or moldplate (31 at the outer side of the pr jection will. of course, presentits concave face to the work and the shape-retaining strips or rods willbe upon its convex faee'while the converse arrangement will be employedat the inner side of the projection. i

In Fig. 10, I have shown a method where by cornices may be formed upon awall. 'lhe cornice mold 65 is supported against the wall by an arm (56which may conveniently be one of the jack arms 2, the mold resting uponthe inner end of the arm, as shown. Jr stop bracket (57 having anupstanding linger 6-5 is adjustabiy secured upon the arm (56 by a setscrew (39 with the linger (3S bearing against the outer side of the moldso that the mold will be firmly held in its iroper position.

If a beam or girder is to be formed, a telescopic post T0 is providedand a crosshead or bar 71 is secured upon the upper end of this post. Abox consisting of the side members 72 and a bottom 73 arranged along theline of the contemplated beam or oer with the bottom 73 resting on theseveral crossheads 71, and the arms 10 are then placed against the sidemembers T2 and ed therewith just they are engaged with the mold members13 in Fig. l. The iurnbucl-zles 21 and are adjusted to clamp the membersof the box in proper position and brace rods i i are extended betweenthe said arms and the ends of the cr 'sheads Tl so as to impart thedesired rigidity to the structure. Of course, the jack will beunnecessary in this adaptation of the invention.

ilhcn it is desired to form a column, I employ the form-retaining arms75 which are of the same type as the carrier arms 10, being connected bythe turnbuckles 7G and 77, as shown. The ends of these arms remote fromthe turnbucklcs are provided with outstanding lugs 78 and a clamp 79 isprovided and connected with said lugs by bolts 80 in an obvious manner.A box of the proper dimensions for the column is formed about the siteof the column and consists of plates or mold boards 81, two of whichrest against the inner sides of the arms 75 which, in this instance, ofcourse, are arranged in a horizontal position, the meeting mold boards81 extending transversely between the arms and the first boards withtheir vertical edges against the inner sides of the latter. Lugs 82 areformed upon the arms, a presser bar 83 being preferably interposedbetween the lugs and tie transverse term board, as shown. At theopposite side of the box, a prcsser board 8% is inserted between themold board 81 and the clamping plate 79 so that. when the nuts upon thebolts 80 are turned home. the several form boards will be firmly clampedtogether and will maintain their set relation while the concrete isbeing 1. cured and is setting.

n the foregoing description. taken in .th the accom a :ing draw- Be seenthat I ham. provided a compact and easily manipulated apconcretestructures may be paratus whereby readily and rapidly erected and themolds or forms adjusted to new positions as the Work pro resses.

having thus described the invention, I claim:

v i. In apparatus for the purpose set forth, the combination of a mainsupporting member, a jack arm titted directly upon said member, means onthe supporting men'iber for shifting said arm vertically along themember, and mold members carried by the jaolr arm.

2. In an apparatus for the purpose vset forth, the combination of anuprightsupport, jack arm fitted at one end about the said uprightsupport and projecting laterally therefrom, mold members supported fromsaid arm, means mounted in said arm for securing it in a set position tothe upright support, and means mounted on the uprightsupport below thejack arm for etl'ecting vertical movement of the arm along the support.

8. In an apparatus for the purpose set forth the combination of anupright, a jack arm litted to the upright and projecting laterallytherefrom, mold members suspended from the arm, means for securing thearm in a set position upon the upright, a threaded rod depending fromthe arm, a box mounted upon the upright below the arm, a jack shaftmounted upon the said box, a Worm on said shaft, and a Worm gear fittedWithin the box and meshing with said worm and having an internallythreaded hub engaging the said threaded rod. I

4. In an apparatus for the purpose set forth, the combination of a pairof mold carriers, means for suspending said carriers and usting the samevertically, mold members fitted to the inner faces of said carriers,feet at the lower ends or the carriers supporting said mold members,brackets slidably fitted upon the carriers to engage over the upper endsof the'mold members, and extensibleconnections between the cariers abovethe brackets and the mold members.

In an apparatus for the purpose set forth, the combination of a pair ofmold carriers, means for suspending the carriers, mold members supportedby the carriers on the inner faces of the same, core carriers extendingacross and resting upon the mold members, cores suspended from said corecarriers, and intermediate strips engaged with the opposed ends ofadjacent cores.

6. In an apparatus for the purpose set forth, the combination of moldmembers,

means for supporting the mold members, core carriers resting upon andextending across the mold members, and free of the supporting means,cores disposed between the mold members, and hangers fitted in the corecarriers and connected to the cores and movable vertically through thecore carriers whereby to lift he cores from the work.

In an apparatus for the purpose set forth, the combination of moldmembers, for supporting the mold members, a core-carrying bar extendingacross and resting upon the mold members and having a central archedportion, a core disposed be tween the mold members in vertical alinementwith the arched portion of the core carrier, and a hanger secured on thetop of the core and extending through and supported by the core carrierand movable vertically therethrough whereby to draw the core into thearched portion of the carrier.

8. In an apparatus for the purpose set forth, the combination or" moldmembers, means for supporting the mold members, cores disposed betweenthe mold members and in spaced relation thereto, means for raising themold members and the cores, and intern'iediate plates slidably engagedwith the opposed ends of adjacent cores.

9. In an apparatus for the purpose set forth, the combination of moldmembers, means for supporting the mold members, cores disposed betweenthe mold members and spacel therefrom and provided with vertical groovesin their ends, and intermediate strips slidably engaged in said groovesand provided with notches in their lower ends.

10. In an apparatus for the purpose set forth, the combination of formboards disposed in angular relation, and connecting plates secured tothe outer faces of meeting term boards, one of said plates having alongitudinally extending head at its free edge and the other of saidplates having a grooved extension slidably receiving the head.

11. In an apparatus for the purpose set -forth, the combination or" formboards disposed in angular relation, a term block having dovetailed sideedges engaging the meeting ends oi said f'orm boar is, and connect-- ingplates secured to the form boards and bearing against said i'orm blockand having sliding engagement with each other.

In testimony whereof I affix my signature.

PATRICK J. CREEDON. [L. s]

